Extreme Rainfall Surge
Running at about its usual level.
An offshoot of Himalayan Glacial Flood Crisis: a trend of its own that grew out of that one.
What it is
Unusually intense and repeated storm systems are drenching regions that rarely see heavy rainfall, particularly in the American Southwest, coastal California, and parts of Ireland and Australia. Flash floods have forced evacuations, rivers have overflowed their banks multiple times in quick succession, and some areas have recorded more rain in a single day than they would normally see in an entire month. Even when storms briefly pause, flood risk remains elevated, as saturated ground and swollen rivers leave little capacity to absorb additional rain.
This week vs usual
-34%
4 vs about 6 usual
Signals this week
128
from every source, newer ones too
Sources
11
over the last seven weeks
Momentum
26/100
tracked since Nov 5, 2026
Where it is being talked about
Share of its signals over the last four weeks. Mostly News.
The rest of this trend is on Starter
- An AI brief: why now, who is driving it, what to watch
- The 90-day chart against its usual level
- An email when its label changes
More science trends
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